Hamburg's data protection agency has warned the state government to stop using Zoom due to data protection concerns, citing the transfer of user data to the US for processing, which violates the EU's General Data Protection Regulation (GDPR). The agency's concern follows a landmark ruling that invalidated a data transfer arrangement between the EU and the US. The Hamburg government has been given a formal warning to cease using Zoom. A local alternative, provided by the German company Dataport, is readily available.